package cn.frh.controller;

import cn.frh.domain.User;
import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.loadbalancer.Server;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/order")
@DefaultProperties(defaultFallback = "fallbackMethod")
public class OrderController {
    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/getByUserId/{id}")
    @HystrixCommand // 标记方法熔断
    //@HystrixCommand(fallbackMethod = "fallbackMethod") // 标记方法熔断，fallbackMethod指定的是托底方法名称，当远程服务调用出现异常，或是方法本身出现异常，会触发托底方法
    public Object getByUserId(@PathVariable("id") Long id){
        //String url="http://localhost:10020/user/getByUserId/"+id;
        //通过服务名来调用
        String url="http://user-server/user/getByUserId/"+id;
        User user = restTemplate.getForObject(url, User.class);
        return user;
    }

    //独立
//    public User fallbackMethod(@PathVariable("id") Long id){
//        return new User(-1l, "服务熔断触发", "用户服务不可用！");
//    }


    // 统一降级方法
    public Object fallbackMethod(){
        return new User(-1l, "服务熔断触发", "用户服务不可用！");
    }
}
